Regulator for steam-accumulators.



E. HARLE Z.

REGULATOR FOR STEAM AGOUMULATORS APPLICATION FILED JAN. 6, 1912.

1,066,41 1 Patented July 1, 1913.

li /77666615 f f UNITED STATES PATENT o FtoE.

EMILE HARLE, OF PARIS, FRANCE, ASSIGNOR '1'0 SOCIET'E HARLE' Q CIE OF PARIS,

FRANCE, A CORPORATION OF FRANCE.

REGULATOR FOR STEAM-ACCUMULATOR.

Specification 'ot Lettersjatent.

Patented July 1 1913.

Original application filed September 30, 1910, Serial No. 584,739. Divided and this application filed January 6, 1912.

T 0 all whom it may concern Be it known that I, EMILE Harm), citizen of the Republic of France, residing at Paris, France, have invented certain new and useful Improvements in Regulators for Steam-.

Accumulators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention-relates to improvements in regulators for steam accumulators.

It has been proposed heretofore to provide a steam plant comprising a source of steam, a; primary engine taking live steam from sait source, a secondary engine arranged to take either live steam from said source or exhaust steam from the primary engine, according to whether the primary engine is idle or operating, in combination with a steam. accumulator interposed be i tween the exhausoof the primary engine and the exhaust steam inlet of the secondary. engine, said accumulator serving to store any surplus exhaust steam from the primary engine and in turn supply it to the secondary engine, thus allowing the latter to receive a fairly constant supply of exhaust steam notwithstanding the intermittent discharge of exhaust steam iirom the said primary engine. E

In my application No. 584,739, filedin the United States Patent-Office Sept. '30, 1910, is described a plant of the kind above mentioned, in which the accumulator has a ca: pacity of variable volume, in combination with regulating means controlled by this accumulator for supplying live steam to the secondary engine when the exhaust steam fails, and in the specific embodiment claimed in said application a governor is arranged to control the steam supply to the secondary engine, whether live or exhaust steam be used, the governor being thrownlinto action with one or the other source of the steam to the secondary engine by the movement of the accumulator. w

-The present application is ag'division of my aforesaid application, and relates to a specific embodiment of the invention in which the governor controls separate governor valves for the live steam and exhaust steam supply, respectively, while the accumulator controls one separate valve inone Serial No. 669,856.

only of the sources of steam supply. In this modificatiom the accumulator either cuts off the exhaust steam supply, which causes the secondary engine to slow down and the overnor to open the live steam supply, or the accumulator, upon receiving a sufficient exh nust steam supply shuts off the live steam supply, whereupon the governor acts wholly on the exhaust steam supply.

My invention will be more specifically described in connection witliltheaccompan ing drawings and then will be particular y pointed out in the claims.

In the drawings, Figure 1 is a diagramma c view of one form of theinvention in wh ch the source of exhaust steam is controlled by a valve under the influence of the accumulator; Fig. .2 is a similar view of a modification in which the source of live steam is controlled by a' valve under the influence of the accumulator,

Referring to the drawings,' and particularly to Fig. l, a is a source Zof steam, for lexample, a boiler; b is a primary steam engine, and c a steam accutiiplatgfr of variable volume and constant pressure; this accumui lator comprising a tank in which is mount} ed a rising and falling Qbeirl a.- At ii is i dicated a secondarystea'im engine connect (1 to a condenser g. Thel priimary engine/b takes live steam from the hotel r a through a suitable conduit a" cont-roll bg by a valve as indicated at a and said engine discharges exhaust steam through anexl aust pipe I) to the exhaust steam inlet of t he secondary engine (I, said exhaust pipe virb having a branch 7f extending into the iaccumula'tor c in a Wtll known manner. The secondary engine 1/ may be operated by live steam taken directfrom the boiler a by a live steam pipe (2 In the example shown in Fig. 1, the exhaust pipe I) is provided with a valve 0 arranged to be controlled by the movement of the accumulator bell c. In the example shown the bell 0" is' provided with an arm h, and a lever, i,,is arranged with one. end in the path ofithe, arm h, this lever being fulcrumed atfi, and con nected to the valve 0 by suitable means, as for example,a rod a", whereb as the lever i is moved it will move the od 'and valve. The lever z' is provided with a suitable counterbalancing ,device, as for example, a

weight, j, which tends to move the valve rod in such a direction as'to open the valve e. At 1 is indicated a, governor of the usual flying ball type, said governor having an arm arranged to play between the ends of two levers i and i fulcrumed as shown in the drawing and connected to valves 4 and The operation "of tits embodiment of the.

invention is as'fpllows: lVhen the primary engine is operatingthe bell is raised and the lever 2' opens the valve e, thus maintaming a supply of exhaust steam under uniform pressure to the secondary engined. The governor spindle rises and lifts the end of the lever i according to the speed. of the engine, thereby. tending to throttle the exhaust steam supply at the valve 4 as may be required. If the engine slows. down the spring 2 moves the lever i to open the valve 4. If the source of exhaust steam fails owing to the stopping of the engine I) the bell falls and closes the valve 6 while the valve 4 is opened by the falling of the governor and the action of the spring 2. The continued movement. of the governor spindle downward compresses the spring 3, moving the lever 11" to open the valve 5 and thereby supply live steam to the secondary engine.

Variations in the speed of the engine willcause movements of the governorwspindl'e and its attached arm thus moving the lever i" to adjust the valve 5 as maybe required to control the speed of the said'secondary engine. It will be noted that if at any time while the secondary engine is running with the live steam supply the primary engine is started, arm llof the bell will fr e the lever i and allow the. counterweight to open the valve 6'. Since the valve 4 is standing open, the exhaust steammay pass to the secondary engine and speed up the same whereby the governor spindle Willlift and cooperate with the leverji to control the valve 4 for the exhaust s'team inlet, while the spring 3 will be free to move the lever i so as to close the valve 5 and shut off the live steam from the said secondary engine.

Inl ig. 2 the arrangement of the governor and the [valves 4; and 5 with. their springs is similar to the construction shown in Fig. l, but in this case the valve 6 for the exhaust steam pipe is omitted and the accumulator is used to influence a control valve f located in. the live steam pipe lead-- ondary engine but terminates in the accumulator. A second pipe leads from the accumulator to'said secondary engine. The hell 0 of the accumulator is provided with a float t whereby as the bell descends and the float t enters the liquid at the bottom-of the accumulator, a part of the weight of the bell is taken oil the steam, whereby a variation of pressure on the exhaust steam results. To the stem of the valve 7' is connecteda piston-u? movable in a. cylinder as slhownpone end ofthe said cylinder being in constant communication with the exhaust steam pipe I), through the pipe b". In this arrangement when the hell 0* is down the "engine is actuated, by exhaust steam, the

supply of this steam to the said engine be-.

ing controlled by the governor through the valve 4. When the supply of exhaust steam fails the piston u is 'moved upwardby any suitable means, as for example a spring, and the valve i is opened to'allow live'steain to supply"'the":secondary engine. This live steam supply is"controlled by the governor through the valve 5; At this-time the valve 4 is closed by' thef spring 2-. It will be noted from. the; drawing that the spindle 12 H of the governor l'has a 'ce'rtain playbe- Y tween the ends of the valvdlcvei'sl'z' and 2" for the purpose of notjcompletely cutting oil the supply. of steam through onejvalve after the spindlehas left the lever of the other valve and thereby-cutoff the steam through said valve.

Having thus fully described my invention, what I claim is:- r

1. The combination, with aprimary engine, a secondary engine, and aboiler, of connection between said boiler and the primary e igine whereby live steam may be supplie to the latter, connections between the: oilerand the secondary engine fox-supplying live steam to the said sec ondary engine, means for supplying exhaust steam from the primary engine to the secondary engine, a steam accumulator comprising a bell arranged to be acted upon by said exhaust steam, and means influenced by the said bell for shutting off one of the sources of steam supply to the secondary engine. a

2-. The combination, with a primary engine, a secondary engine, and a boiler, of

connections for supplying steam from the boiler to said primary engine, connections for supplying steam from the boiler to the secondary engine, means for supplying exhaust s'team from the primary engine to the secondary engine, a steam accumulator having a bell arranged to be acted upon by said exhaust steam, a valve for controlling one source only of the steam supply to the secondary engine, means influenced. by the accumulator for operating said controlling valve, a governor actuated by the secondary engine, and governor valves controlled by said governor and arranged to control both sources of steam supply to the secondary engine.

3. The combination, with a primary engine, a secondary engine, and a boiler, of connections for supplying steam from-the boiler to said primary engine, connections for supplying steam from the boiler to the secondary engine, means for supplying exhaust steam from the primary engine to the secondary engine, a steam accumulator having a bell arranged to be acted upon by said exhaust steam, a valve for controlling one source only of the steam supply to the secondary engine, means influenced by the accumulator for operating said. controlling valve, a governor actuated by the secondary engine, and governor valves independent of the accumulator-influenced means and controlled by said governor and arranged to control both-sources of steam supply to the secondary engine.

4. The combination, with a primary engine, a secondary engine, and a boiler, of connections for supplying steam from the boiler to said primary engine, connections for supplying steam from the boiler to the secondary engine, means for supplying exhaust steamfrom the primary engine to the secondary engine, a steam accumulator having a bell arranged to be acted upon by said exhaust steam, a valve for controlling one source only of the steam supply to the secondary engine, means influenced by the accumulator for operating said controlling valve, a governor actuated by the secondary engine, and governor valves controlled by said governor and arranged to control both sources of steam supply to the secondary engine, spring impelled valve levers for actuating said governor-valves and a spindle from the governor extending between said levers, a playbeing provided between said spindle and the valve levers.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

EMILE HARLE.

Witnesses:

Fnr'ionnro HAnLE, BARTLEY F. Yos'r. 

